DM120 Lecture 2 Outline of Last Lecture I Textile Industry Outline of Current Lecture II Fibers A Natural fibers III Fiber Structure and Properties IV Fiber Performance Properties V Environmental Conditions Current Lecture Fibers Plant fibers Stem flax hemp jute ramie Leaf sisal abaca Seed cotton kapok Wool A natural protein fiber cashmere mohair silk Manufactured Man made synthetic fibers Spinnerette melt spinning nylon PET wet spinning acrylic rayon dry spinning acetate modacylic Fiber Structure and Properties Physical Attribute Chemical Attribute Fiber length Staple fibers fibers whose lengths are measured in inches most natural fibers synthetic fibers Filament fibers fibers of longer length sill synthetic fibers Fiber shape influences light reflectance light reflects much more evenly good luster light reflected more evenly fair luster light reflected unevenly poor luster Length surface cross section and longitudinal configuration crimp bends and twists of a fiber fiber diameter thickness of fiber Chemical composition and molecular formation hydrophilic absorbs water easily thermoplastic able to be melted permanent press Fiber performance properties abrasion resistance ability to resist wear from rubbing Absorbency ability to take in moisture hydrophilic vs hydrophobic skin comfort static build up dimensional stability in water stain removal water repellency wrinkle recovery These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Chemical effects different fibers react differently dying and finishing Cover ability to occupy an area wool fiber with crimp give excellent cover Elasticity elongation and recovery spandex Environmental Conditions Wool needs mothproof treatment Nylon and Silk low sunlight resistance
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